Re: 2.4.25 SMP - BUG at page_alloc.c:105

From: Marcelo Tosatti
Date: Wed Mar 24 2004 - 14:59:14 EST

The backtrace is odd to me.

set_page_dirty() does not call __free_pages_ok() directly or indirectly.

How can it be?



I found this in the logs of a Dual Athlon MP machine (Tyan board)
running 2.4.25-SMP:

kernel BUG at page_alloc.c:105!
invalid operand: 0000
CPU: 0
EIP: 0010:[__free_pages_ok+80/704] Not tainted
EFLAGS: 00010286
eax: c0333674 ebx: c1b2d720 ecx: 00000000 edx: f22f7a84
esi: 00000001 edi: 00000000 ebp: 00000001 esp: f6901e3c
ds: 0018 es: 0018 ss: 0018
Process svscan (pid: 1348, stackpage=f6901000)
Stack: c033364c f741cbc0 f22f7a84 00000001 0804c000 c0133ea6 f22f79c0 00000004
00000001 00000001 0804c000 00000001 c01308fa c1b2d720 f68e3080 0804b000
00001000 0844b000 c03ac4e0 00000001 0804c000 f68e3084 f42baa40 f7212440
Call Trace: [set_page_dirty+166/176] [zap_page_range+330/400] [exit_mmap+221/352] \
[mmput+88/176] [do_exit+259/800] [sig_exit+195/208] [dequeue_signal+95/192] \
[do_signal+448/694] [schedule_timeout+94/176] [process_timeout+0/96] \
[sys_nanosleep+232/448] [do_page_fault+0/1347] [signal_return+20/24]

Other than this BUG (that took down the machine hard, I was lucky to log
across the network), there appear to be no relevant logs shortly before
this crash.

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